CAPE Physics Unit 2 · 2009 · Paper 1 · Question Q17
Item 17 refers to the following graph which represents a sinusoidal alternating current against time. The equation to represent this alternating current is
- (A)
I = 10 \cos 50\,\pi t - (B)
I = 10 \cos 80\,\pi t - (C)
I = 10 \cos 100\,\pi t - (D)
I = 20 \cos 200\,\pi t
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